I think they need to stop making all these Guitar Hero spinoffs ,I mean no matter how much some people like a certain band,just playing their songs would get pretty old,especially for what ends up being a 60$ game.

I think the best thing though would be a "guitar hero custom". As in(like someone above said similar to audio-surf, it adds your standard GH tracks that any sequel would recieve,buts its main appeal is a smart game system that once you add any song of your choice to the game,it automatically detects and creates the proper note track for all difficulties and instruments. I'm sure this is far off,but if music games continue to be as hot as they are atm,I can see this as an inevible evolution from them in years to come.